It's ... than a horse. (small)
smaller
I think that cats are more intelligent that dogs.
than
A bike/ a car/ slow
A bike is slower than a car.
It's ... than a beetle. (fast)
faster
I'm more good at maths than art.
better
English/ Chinese/ easy
English is easier than Chinese.
It's ... than a cat (friendly)
friendlier
I think swimming is easyer than skiing.
easier
Spain/ hot/ England
In Spain is hotter than in England.
It's ... than a frog (intelligent)
more intelligent
The weather in Scotland is badder than in England.
worse
Los Angeles/ far from London/ New York
Los Angeles is farther from London than New York
It's ... than a spider (beautiful)
more beautiful
My brother is fiter now because he goes running every day.
fitter
Books/ interesting/ TV
Books are more interesting than TV